Interesting question, so too, do you use the light meter LEDs... OK, so I'm an "incident" lighting sort, but...
Yes, to speeds 2000, 4000, and 8000 and light meter LEDs: they're there, let's use 'em.
At ISO 2500 with 4000 or 8000 in daylight I can get some "nope-no-film-like" source data that obviates post-proc, er, "methods".
I use the LEDs because, sniff, there ain't no EV adjustment wheel, sob! Oh, the horror!
rgds,
Dave